Lyndex-nikken 330-020 Hex Collet 5/16 in 3-3/4 in Oal

Product Description

The LYNDEX-NIKKEN 330-020 is a hex collet designed to securely grip hex-shank tooling in compatible collet chucks used on machining centers and CNC turning equipment. It accepts a 5/16 inch hex tool shank and features a 1.988 in-20 external thread for mounting. The overall length (OAL) is 3-3/4 inches. This collet provides precise, repeatable tool holding for hex-drive cutting tools, taps, and form tools, making it a standard component in precision machining operations. Machinists and toolroom technicians install and service these collets as part of routine tooling changeovers.

This hex collet is suited for use in production machining environments where hex-shank tooling must be held with consistent concentricity and clamping force. It is appropriate for both horizontal and vertical machining center setups. The 5/16 inch capacity targets smaller hex tooling commonly used in tapping and light milling applications. Tooling engineers and setup machinists working in job shops, aerospace, and general manufacturing will find this collet fits standard LYNDEX-NIKKEN collet chuck systems with the 1.988-20 thread interface.

Key Features

• 5/16 inch hex shank capacity for precise grip on hex-drive tooling
• 1.988 in-20 external thread for secure chuck engagement
• 3-3/4 inch overall length supports reach and clearance requirements
• Hex collet geometry prevents rotation and maintains angular orientation of tooling
• OEM-grade construction consistent with LYNDEX-NIKKEN toolholding standards

Compatibility

Designed as an OEM-style replacement or supplemental collet for LYNDEX-NIKKEN collet chuck systems using a 1.988 in-20 external thread interface and accepting 5/16 inch hex shank tooling.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Before changing collets, power down the machine spindle completely and confirm the spindle has come to a full stop. Use the correct spanner wrench for the collet nut to avoid damaging the thread or collet taper. Do not exceed the tool chuck clamping torque range specified by the chuck manufacturer, and inspect the collet seating surface for debris or wear before each installation.